Re: [CDV700CLUB] Digest Number 147
As a one time scuba, and then commercial diver, let me offer some
suggestions in your quest for an underwater radiation detector.
If you were able to find such a purpose-built device at the retail level,
you'd probably have to mortgage your soul for it. The nuclear industry, much
like the medical field, is highly regulated and everything connected to it
seems to priced at about 5 times what you'd expect to pay for it.
That's one of the reasons guys like list owner Tom Herman are a godsend to
weird folks like us who take a hobbyist's interest in radiation: he can
repair lots of the radiation detection junkers we dig up in weird places!
Anyway, back to your question! Water, as you may realize, is an extremely
efficient radiation attenuator. It will stop all alpha particles within less
than a millimeter and all betas within an inch or so. When you consider the
addition of a pressure-proof housing of some sort for your radiation
detector, you are going to be limited to searching for gamma emitters. Water
is an efficient gamma attenuator too, but you may be able to pick up stronger
gamma sources through several feet of water.
I'd suggest that you find an extremely sensitive scintillation machine and
then look for a waterproof video housing that it will fit in. Try eBay for
the housing and maybe some pawn shops if you live in an area with a large
sport diving community. Years ago, I found a largish Ikelight video housing
at a pawnshop for $60. It was basically little more than an extruded aluminum
cylinder with O-ring sealed clear plastic front and rear caps and handles
attached to the side.
If you find anything interesting let us know, but personally, I'd like to
find a sunken chest of $20 gold pieces more than an old Russian warhead ;-)